Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Huidobro, P. Arroyo"'
We discuss the emergence and manipulation of generalised Dirac cones in the subradiant collective modes of quantum metasurfaces. We consider a collection of single quantum emitters arranged in a honeycomb lattice with subwavelength periodicity. While
Externí odkaz:
http://arxiv.org/abs/2203.11195
Autor:
de Paz, M. Blanco, Herrera, M. A. J., Huidobro, P. Arroyo, Alaeian, H., Vergniory, M. G., Bradlyn, B., Giedke, G., García-Etxarri, A., Bercioux, D.
Publikováno v:
J. Phys.: Condens. Matter 34 314002 (2022)
Topological Quantum Chemistry (TQC) has recently emerged as a instrumental tool to characterize the topological nature of both fermionic and bosonic band structures. TQC is based on the study of band representations and the localization of maximally
Externí odkaz:
http://arxiv.org/abs/2203.10908
Autor:
Proctor, Matthew, de Paz, María Blanco, Bercioux, Dario, García-Etxarri, Aitzol, Huidobro, Paloma Arroyo
We study the topological properties of a kagome plasmonic metasurface, modelled with a coupled dipole method which naturally includes retarded long range interactions. We demonstrate the system supports an obstructed atomic limit phase through the ca
Externí odkaz:
http://arxiv.org/abs/2012.09791
Publikováno v:
Phys. Rev. Applied 16, 014044 (2021)
We present a general framework for the homogenisation theory of space-time metamaterials. By mapping to a frame co-moving with the space-time modulation, we derive analytical formulae for the effective material parameters for travelling wave modulati
Externí odkaz:
http://arxiv.org/abs/2009.10479
Autor:
Proctor, Matthew, Xiao, Xiaofei, Craster, Richard V., Maier, Stefan A., Giannini, Vincenzo, Huidobro, Paloma Arroyo
The breathing honeycomb lattice hosts a topologically non-trivial bulk phase due to the crystalline-symmetry of the system. Pseudospin-dependent edge states which emerge at the interface between trivial and non-trivial regions can be used for directi
Externí odkaz:
http://arxiv.org/abs/2008.11980
Autor:
Proctor, Matthew, Huidobro, Paloma Arroyo, Bradlyn, Barry, de Paz, Maria Blanco, Vergniory, Maia G., Bercioux, Dario, Garcia-Etxarri, Aitzol
Publikováno v:
Phys. Rev. Research 2, 042038 (2020)
We analyze the robustness of corner modes in topological photonic crystals, taking a $C_6$-symmetric breathing honeycomb photonic crystal as an example. First, we employ topological quantum chemistry and Wilson loop calculations to demonstrate that t
Externí odkaz:
http://arxiv.org/abs/2007.10624
Publikováno v:
Phys. Rev. B 101, 075434 (2020)
Geometrical singularities in plasmonic metasurfaces have recently been proposed for the enhancement of light-matter interactions, owing to their broadband light-harvesting properties and extreme plasmon confinement. However, the large plasmon momenta
Externí odkaz:
http://arxiv.org/abs/1912.11020
Publikováno v:
Phys. Rev. B 99, 165423 (2019)
A local model of the dielectric response of a metal predicts that singular surfaces, such as sharp-edged structures, have a continuous absorption spectrum and extreme concentration of energy at the singularity. Here we show that nonlocality drastical
Externí odkaz:
http://arxiv.org/abs/1901.10916
Autor:
Rider, Marie S., Palmer, Samuel J., Pocock, Simon R., Xiao, Xiaofei, Huidobro, Paloma Arroyo, Giannini, Vincenzo
Topological photonic systems, with their ability to host states protected against disorder and perturbation, allow us to do with photons what topological insulators do with electrons. Topological photonics can refer to electronic systems coupled with
Externí odkaz:
http://arxiv.org/abs/1812.08679
Publikováno v:
Broadband Tunable THz Absorption with Singular Graphene Metasurfaces Emanuele Galiffi, John B. Pendry, and Paloma A. Huidobro ACS Nano 2018 12 (2), 1006-1013 DOI: 10.1021/acsnano.7b07951
By exploiting singular spatial modulations of the graphene conductivity, we design a broadband, tunable THz absorber whose efficiency approaches the theoretical upper bound for a wide absorption band with a fractional bandwidth of 185\%. Strong field
Externí odkaz:
http://arxiv.org/abs/1810.10467